Inflating-coupling



nmc. SCHWEINEBT -AND "H., KKR/AFT...

INFLATING COUPLING. -APPLICATION 'FILED APR-.2. 1919.

Patented Apr. 12, 1921.

no. .a

UNITED STATES PATENT OFFIQE.

MAXIMILIAN CHARLES SCHWEINERT, OF "WEST HOBOKEN, AND HENRY P. KRAFT, OF RIDGEVTOOD, NEW JERSEY.

NFLATING-COUIELING.

Original application filed September 7, 1915, Serial No. 49,22l.

Divided and this application filed April 2, 1919.

To all whom t may concern Be it known that we, MAXIMILIAN C. Sci-minimun and HENRY P. KRAFT, citizens ot the United States of America, residing in Test Hoboken, in the county of Hudson and State of New Jersey, and in Ridgewood, in the county of Bergen and State ot New Jersey, respectively, have invented certain new and useful improvements in lniating- Couplings, of which the following is a speciication.

This invention relates to inflating devices particularly adapted for use in connection with pneumatic tires. 1t is especially directed to a coupling for connecting a reservoir ci compressed air with the pneumatic tire to be initiated. rThe invention relates to a valve coupling such as is applied at the end of thehose leading 'from the air reservoir for application to the tire valve.

rThe figure of the accompanying drawing is a vertical longitudinal mid-section of the coupling. 4

ln the drawing, A indicates the casing which is formed with a reduced portion B serving as a nipple to receive the hose C, which is suitably attached as shown. At the bottom of the casing A it is enlarged to form a :toot D, within which is formed a. chamber E communicating by a bore E with an upper chamber F, in which is located a clieck valve H pressed against a seat l by means of a spring G, the upper end of which reacts against a screw-top J which is firmly attached to the upper end of the casing. Preferably the valve seat I has a thin or sharp edge, and the valve H is termed with a gasket or seating face adapted to make an air-tight joint with said seat. rllhe lower end ci" the body is formed with an opening L to admit the tire valve, this opening being formed through a threaded ring M, which is screwed into the lower end et the casing. In the chamber E is placed the head or base K of a valve unseating device K, having a neck or stem K2 which passes up through the bore E and terminates sufficiently near 'the seat I so that when lifted it may unseat the valve H. The head K, is faced with a soft packing O to make a yielding engagement with the lip ci' the tire valve, whereby to prevent leakage of air between the coupling and such lip. Above the head K is a pacln'ng P JPateirted Apr. 12, `1921.

Patent No. 1,304,814, dated May 27, 1919.

Serial No. 286,965.

to prevent leakage of air between the casing and unseating device.

iihen the coupling is pressed down upon the top of the tire valve, the lip of the valve shell engages the packing O of the member l and presses the latter upwardly until it unseats the valve H, and the head K engages the packing P. A tight joint is thus secured with the tire valve shell and leakage is prevented. .Air under pressure trom the reservoir passes down through the coupling, around the valve H, and through the bore of the stem K2 and thence into the valve shell, thus unseating the tire valve and entering the tire.

lt will be understood that the valve unseating member ii is independent oit' the valve H so that the latter is free to adjust itself to the seat I. The member K requires to be held in place to keep it from falling out or' the casing and this function is performed by the annular part M which closes the bottom of' the chamber E. The opening L formed through the member M ailords a sutliciently close iit with the threaded nipple end of the tire valve to serve as a guide for the coupling as it is applied to the tire valve. But instead of the coupling being screwed onto the threaded portion of the tire valve, it is simply pressed downward thereupon. Thus, by a simple and instantaneous operation the coupling makes a tight connection with the tire valve and unseats the check valve H so that compressed air may iow from the reservoir into the tire.

yl`he present application is a division of our application tiled September 7, 1915. Serial No. L19,221, which matured into Patent No. 1,304,8141, May 27, 1919.

llVhat we claim is 1. in iniiating device for pneumatic tires, comprising a casing having a nipple for insertion within the hose, and a foot adapted to project beyond the end of the hose, and of larger diameter, said casing having a valve chamber formed within said nipple, and a lower chamber within said foot, with an intervening contracted passagev and a valve seat at the junction of said passage and valve chamber, a check valve and spring in said valvechamber, an unseating member comprising a tubular stem movable in said passage, and a flanged portion movable within Vthe chamber in said foot, and a retaining member closing the lower end of said chamber and having Within it an unthreaded opening adapted, when the nfating device is applied to a tire Valve, to receive and guide Within it the nipple of such valve, whereby by pressing the inflating device endwise against ajaire valve, the unseating member is displaced torunseat the check valve and admi compressed air to the tire Valve.

2. An nating device according to claim l, the foot or' the casing' extended beyond the chamber Within it, and internally threaded and retaininginember formed as an annular plug externallyV threaded Vand screwing into said opening. Y

An nfating device according to claim l, the seatin the casing being upturned, the Valve being an externally-cylindrical Valve carrying a seating gasket on its lower face for making a tight joint with said Seat, and the stern of the unseatng member formed with a lateral opening, whereby when it lifs the check valve, air may IOW past the check valve through such lateral opening` and through the Stein of said member to the tire valve.

n Witness whereof, We have vhereunto signed our names.

MAXEMILEAN CHARLES SCHWEENERT.

HENRY P. KRAFT. 

